1Objects fall toward earth at a rate of 9.8 m/s^2 because of ______________
2According to ________________________________ momentum lost equals momentum gained.
3The force keeping a ball on a string moving in a circle is _________________________.
4Anything that's thrown or shot through the air is ___________________________.
5Momentum is a property a moving object has because of its ____________________ and velocity.
There are a large number of words which fit.
1. The mass of the Earth
2. law of conservation of momentum
3. tension
4. free falling
5. mass or inertia
1. Objects fall toward the Earth at a rate of 9.8 m/s^2 because of gravity. Gravity is the force of attraction between two objects with mass, and in the case of objects near the Earth's surface, it pulls them towards the center of the Earth.
2. According to the law of conservation of momentum, momentum lost equals momentum gained. This law states that in a closed system where no external forces are acting, the total momentum remains constant. When objects interact with each other, the total momentum before the interaction is equal to the total momentum after the interaction.
To calculate momentum, you would use the formula: momentum = mass x velocity. To calculate the change in momentum, you would subtract the initial momentum from the final momentum.
3. The force keeping a ball on a string moving in a circle is called centripetal force. Centripetal force is the inward force that keeps an object moving in a circular path. It acts perpendicular to the object's velocity and points towards the center of the circle.
To find the centripetal force, you can use the formula: centripetal force = (mass x velocity^2) / radius. The mass is the mass of the object, the velocity is the speed at which it is moving, and the radius is the radius of the circular path.
4. Anything that's thrown or shot through the air is known as a projectile. A projectile is an object that is launched into the air and moves along a curved path under the influence of gravity.
To analyze the motion of a projectile, you can break it down into horizontal and vertical components. The horizontal component of the motion is constant if there are no external forces acting horizontally. The vertical component is affected by gravity, causing the projectile to follow a parabolic trajectory.
To find the range, height, or time of flight of a projectile, you would need to use the appropriate equations of motion, considering the initial velocity, angle of projection, and acceleration due to gravity.
5. Momentum is a property a moving object has because of its mass and velocity. It is a measure of how much motion an object has and is defined as the product of an object's mass and velocity.
The formula for momentum is: momentum = mass x velocity. Mass is the measure of an object's quantity of matter, and velocity is the rate at which an object's position changes with time.
To calculate the momentum of an object, you would multiply its mass in kilograms by its velocity in meters per second. Remember that momentum is a vector quantity, meaning it has both magnitude and direction.